Finding the Fourth Proportional to 935.96, 1,404.42 and 681.56

Step by Step Solution

1. Step 1: Write the proportion equation
   935.96 : 1,404.42 = 681.56 : x
2. Step 2: Convert to fraction form
   935.96/1,404.42 = 681.56/x
3. Step 3: Cross multiply
   935.96x = 1,404.42 × 681.56
4. Step 4: Simplify right side
   935.96x = 957,196.50
5. Step 5: Solve for x
   x = 957,196.50/935.96
6. Step 6: Final answer
   x = 1,022.69